Five Star game , easy. Obvious, by H-game standards. It's not perfect, but it has everything it needs to be very good.
First, for the subjective stuff. The art-style is amazing. The only thing that might be annoying, depending on perspective, is the inconsistent boob size for Aino. Sometimes, it's very jarring how she goes from modest and arguably realistic to big, if not massive by realistic standards. To an extent you can chalk it up to part swapping shenanigans, especially since the other female characters that pop up in the game seem to be consistent.
The story is fun, and not particularly serious. At the very least, the game doesn't take itself seriously and comes with silly references on top of that. As someone who's not particularly big on humor, I still found the game very entertaining. The game wasn't anywhere nearly as cringe-y as it could have been. On top of that, if you look past the humor, you could even say that the game takes a look at certain things that humanity is dealing with, or may be dealing with in the not so distant future. I can't say if any of it is intended or not, but it was certainly interesting to me, and it made playing through all three routes all the more fun.
In terms of fetishes and kinks, the game is utterly vanilla by most standards I can't think off, with the worst thing in it being dubious consent on the part of one girl, and even the MC himself in one instance. No corruption, no crying, no mind-break. It doesn't even do anything weird with programming Aino or any other AI or android to be slut or whatever. So, if all you want is to see cute robo gf get fucked, with some female assistance on a couple of instances, this game will be fun. If you're specifically looking for more intense stuff, you will not find it in this game.
Obviously, mileage may vary.
On the more objective stuff, there are several things to note.
First of all is the gameplay loop.
You have days that are split in four parts, with a theoretical number of 4 actions per day. During that time, you can trigger events, research parts for Aino, have Aino work, or rest to restore her stability. Swapping parts does not take any time slots, but it does lower Aino's stability, so you have to be careful with that and plan it out. Parts are all obtained via Research, which costs money, and may have certain requirements. The only exception being a couple of route specific parts, but even those require you to do some thing to get them.
Different parts have different specs and come with different skills. Each job has its own stat requirement and has skills that can boost your ability to get a bonus. In some cases, having the right skills for the right job can also cause other benefits to occur.
The gameplay loop is basically having Aino do jobs, using the money from the jobs to research better parts or buy other useful items, rinse and repeat. You can also go into town or some other places for events or to meet with people, which also helps unlock 'notes' which help unlock more parts in your research list.
Each route adds a bit of a spin to this loop, and they also affect what sub-events you can do, or rather, when you have to do them. There are no route specific sub-events.
The loop is simple, but interesting enough to not become immediately boring during the three playthroughs you need to do unlock everything. This is helped by the fact that the routes split very clearly. As such, aside from the choice on whether to do sub-routes or not, you don't have to worry about repeating events too much
This is further helped by the fact that on the second playthrough and onwards, you can keep 20% of your final earning, and also receive a special Torso that has very strong stats for the start, and a number of skills that make several sub-events much easier to grab. The stats on it allow you to ignore torso research completely for a good while, which of course makes everything much easier.
Now, when it comes to the bad parts, there are only a few.
First is the fact that the translation is pretty awkward. It's not MTL tier, but it feels like it's either highly edited MTL, or done by someone with a fairly poor grasp of the English language. In one instance, there's even a name or two that weren't translated, though that's not much of a real issue. Also, in one place it seems like the translators couldn't decide on how they wanted to translate something. Whether it's Emotion Sensors, Emotions, or maybe something else, I still don't know...
Second is the fact that this game eats a surprising amount of resources. It hit the GPU hard enough to cause my gaming laptop to actually kick up the fans, which is not something that's exactly common with a Hentai game that's not 3D and not animated.
Third is that it does have some bugs. One in particular, which I'm not sure how it was triggered, can completely destroy your progress in the Cafe route, so save often. It's possible that there are more such issues, but I'm 50% sure that it was caused by the special mechanics for that route. So save often. The game has 100 save slots, there's no reason to not make use of them.
Overall though, unless you're completely allergic to vanilla content, don't like management games or don't like androids, then there's no reason to not give this game a try. I rushed through all three routes, and while the Cafe route was my favorite, all of them were enjoyable, and there wasn't a single sub-event that wasn't fun in some form or another.
So if you like what it offers, give it a try, you won't be disappointed.
